Article ID: 237191 - View products that this article applies to.
This article was previously published under Q237191
When you upgrade from Small Business Server (SBS) 4.0 to SBS 4.5, the process may stop during the installation of SBS Administrator and the following error message may be displayed:
If you manually register the Srvcstat.ocx file by running Regsvr32.exe, the upgrade is still unsuccessful and the same error message is displayed.
DllRegisterServer in Srvcstat.ocx failed: Return code was 0x80040201
This behavior occurs if the currently installed Comcat.dll file is not the correct version. Registering the Srvcstat.ocx file calls the Comcat.dll file. If the Comcat.dll file is not version 4.71, the Srvcstat.ocx file is not registered.
To resolve this issue, replace the version 4.71 Comcat.dll file with the file included in Microsoft Windows NT 4.0 Service Pack 4 (SP4):